Apparatus for starting explosive-engines.



L. M. BOOTH. APPARATUS FOR STARTING EXPLOSIVE ENGINES.

ATPLIOATION FILED SEPT. 27, 1906. 909, 140..

A lllll'llllllIIIIIHII H Patented Jan. 12, 1909.

L. M. BOOTH. APPARATUS FOR STARTING'EXPLOSIVE ENGINES.

APPLICATION FILED SEPT.27, 1908. 99,140.,

Patented Jan.12,1909.

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APEAZE It." F913 EXTLQEEEVE ENGIllES.

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Specification of Letters Patent.

Patented Jan. 12, .1909.

Application filed September 27, 1906. Serial 110,336,395.

To all whom may concern:

Be it known that I, Lnvis lllrnnnn Boorrr, a citizen of the United States, residing at Plainlield, Union county, New Jersey, have invented c. certain new and useful Improvement in Apparatus for Starting Explosive- ;llngines, or which the "following is a specifi-- cution'. l The object of my invention is to provide a simple and effective apparatus for starting ex losive engines. and the particular tea-- 1. es. of my invention are described in the following specification and pointed out in depended claims.

in the accompany in drawings: Figure 1 an elevation of my apparatus Fig. 2 is on end View portly broken away showing a portionof the apparatus. Fig. 3 is a bottom iew partly broken away of an enlarged detsil of the means employed for throwing ment. Fig. 4 isa rgcd etail oi the device em tl owing the gears out gs e einent .Ly lorolten o" my. 5 s m. end Vi w partly hrolten sway showing A h1g2 is an end View cction showi a. portion of the to similar parts ion.

upon which the ap have designated by n i nslon of the crenlr short or" the en inc, the forward end oi whirh is joured in a suitable hearing ries two spur gears l and 5 which. are mounted on the shaft near the forward end thereof. Mountedparallel thereto and above the shaft 2 is a shaft 6,-which is journcled in suitable bearings 7 and 8, which are supported on the plate 1.

@neither end of the shaft 6 are secured by means of set screws 9 retaining collars 10, which prevent the shaft (3 from sliding longi tudinally in its hearings and maintain it in fixedrelation to the shaft 2. On the other end of the shaft 6 is slidsbly mounted a spur gear 11 provided with an elongated hub 12, which is feathered to. the shaft 6' so as to rotate in unison. with it and can be moved longitudinally on the shaft 6. The inner end of the huh 12 is provided with an annular recess 13, the purpose of which will be hereafter leined'. the other or inner end oi salt. sli 6 is mounted ratchet disk let This shaft provided with an elongated: hub 15. secured to theshaft 6 so as to rotate in unison with it.

A strong spring 16' is coiled about the huh 15, the inner end of the spring being; sc curely fastened to the hub. The other end of the main or power spring 16 is attached to the bed plate or support 1 by means of the pin 17, which is secured in eyes 18' in the support 1. A pawl 19 ismounted. in eyes 20 and 21 onthe supporting this pawl is forccd into engagement with the ratchet teeth 22 on the disk by means of s coil spring 2 3, pawl 19 between the eye 21 and: s. collar 2%, which is secured to the pawl Why a pin 25. The collar 24: is provided with an extension 26, through a circular opening in which is secured a connecting rod 2? by means of a nut 28. The other end of the rod 27 is pivoted at 28 to the-operating lever 29', which is pivoted at 30 to the supporting plate 1, the construction being such that when the lever 29 is: forced forward, the spring- 23 is COIT1- pressed and the pawl 19' is forced out oi? engagement with the ratchet teeth 2:2.

Above the pivotal point 30 on the operating lever 29 is mounted a roller 31 as shown in the dotted line in Fig. 1 so as to fit into the recess 13 and engage with the hub 12, thereby causing the spur gear llend its hub 12 to shit "forward and backward on the shaft 6 by the movement of the lever 29. Secured at one end to the lever 29 and st the other" end to a pin 3% mounted. in the supportingplute 1 is a coil spring 82 which is constently' under tension and tends to pull the lever 2-9 backward;

On a stud 33 projecting outward from thesupporting plate 1 are pivotallymounted: parallel toeach other two latches 34: and 35, to which are respectively attached coil springs 36 and 37. The other ends of the springs 36 and 37 are secured to a pin 38' mounted in. the supporting plate 1.. These springs are constantly under tension and tend to force the forward ends of the latches downward. The latches 3i and are also provided at their outer ends with slots, the latch 34: having a loclr notch 39- at the outer end of its slot, and the inner latch having a lock notch 40 at the inner end of its slot, and the lever 2-9 is provided with a pin 4 1 which passes through the the latches 34 and 35, the construction beingsuch that when the lever is forced plate 1, and

which is mounted on: the

SlGtS in c- "lever 29 is forced into the e;

to its extreme forward position, the pin 41 will engage with the lock notch 39, and se-' cure the lever in the forward position, and when the lever 29. is'forced to the extremerear position, the pin 41 will engage vith the lOCk IIOtCh ao a'mt secure the le r in this position. It "is also apparent that when the reme forward position; the spur gear 11 .w' lalso be forced forward and into engage ent with the spur gear/5 as shown in the otted lines in Fig. 1, and when the lever is forced to the exforced backward into the position shown in" the dotted lines in'Fig. 1, the latches 34 and automatically locking the lever in the ex treme forward and rear position. The shaft 6 is screw threaded at 42 as shown in .Fig. l, and mounted thereon by means of an internal screw thread is a shifting device 43- provided with arms 44 and 45.

Mounted in eyes 46 extending from the journals 8 is a rod 46, Which passes through a guide 0 ening 47 in the arm 44, and serves as a guic e for the shifting device 43. The upper end of the arm 44 is provided with. inclined faces 48 and 49. As the shifting device 43 is moved to its extreme forward position by. the rotation of the shaft 6 in the proper direction, the inclined face 48 contacts with the shoulder'50 on the latch 34 and lifts'the latch 34 so as to release the pin 41 from the lock notch 39, and as the shifting device 43 is carried to the extreme rear position by, the rotation of the shaft 6 in the opposite direction, the inclined face 49 contacts with the shoulder 51 on the latch 35 and lifts the latch 35 until the pin 41 is released from the lock'notch 40. To the lower arm is pivotally connected a slotted connecting member 52, the purpose of which will be hereafter explained. Between the shafts ti and 2 is journaled in bearings 53, dpported by the supporting plate 1, a sh ft 54. This shaft is parallel to the shafts/6 and 2 and carries at its forward end a spdr gear 55.

Mounted on the shaft 54 are collars 56.- Rotatably mounted on the lever 29 is a roller 57. The lower end of the arm 29 is provided with a pin 58 which registers with the slot in the connecting member 52. On the outer end of the connecting member 52 is mounted a collar 59, which is secured thereto by the pin 60. A coil compression sprin 61 is also mounted on the connecting mem-' ber 52 so that the outer end thereof abuts against the collar 59. A sliding collar 62 is also mounted on the connecting member 52 and the inner end of the spring 61 abuts against this collar 62. The inner end of the collar 62 is provided with a projection 63 .the. spur gear 5 and the treme rear position, the spur gear 11 will be,

adapted to contact with the pin 58. The connecting member 521s also provided with a shoulder 64, which limits the longitudinal 1 movement of the collar 62 on the member 52 and keeps the spring 61 at a predetermined compression. I

The operation of my device is as follows: Assuming the spring 16 to be tightly coiled and under compressionand the parts in the position shown in Fig. 1, the lever '29 is forced. forward until the pin 41 engages with; the lock notch 39, securing the lever in the forward position. At the same time the "spur gear 11 is forced into engagement with pawl 19-is released from theratchet teeth 22 and leaving the spring 16 free to uncoil and communicate its power to the shaft 6, causing the rotation of this shaft, the gear 1 1, the gear 5 and the engine shaft 2 The rotation of the engine shaft is communicated to the engine and by this means the engine is started. As the spring 16 is unwound and the shaft 6 rotates, the shifting member 43 is moved forward until the inclined face 48 contacts with the shoulder on the latch 34, forcing the lever upward and releasing the pin 41 from the lock notch 39. The spring 32 then shifts the lever 29 backward until the pin 41 is in fengagement with the locknotch140 on the latch 35'. This movement of the lever forces the spur gear 11 backward and the spur gear forward into the position shown in the dotted lines and into engagement with each other. The spur gear 55 at the same time i being in engagement with the spur gear 4,

the continued rotation of the shaft 2 under the power of the engine causes the rotation of the gear 11 in the" opposite direction through the medium of the spur gear 55, and

likewise the rotation of'the shaft 6, resulting in the rewinding of the spring 16. At the same time the pawl 19 has been shifted by means of the spring 23 into 'engagement'with the ratchet teeth 22 and the mechanism is reset. At the same time the shifting member 43 through the rotation of the shaft 6 is moved backward until it occupies the posi'- tion shown in Fig. 1' as it is moved backward, the connecting member 52 compresses the spring 61,- and when the parts are in the position shown "in Fig.1, the inclined face 49 of the arm 44 has been brought into contact with the shoulder 51 on the latch 35 and the latch lifted until the pin 41 is out of engagement with the lock notch 40. The

spring 61 being'a stronger and heavier spring gear mounted onthe said second shaftand 130 eoeneo the driven gear on the crank shaft, and into and out of engagement with said intermediate gear mechanism.

Ihe combination with a crank shaft carrying a driven gear, a second. shaft havii" a power spring connected thereto, of a gear mounted on said second shaft, intermediate gear mechanism, a driving gear mounted on the crank shaft, and a lever connection between the intermediate gear mechanism and the gear on the second shaft, Wherehy the latter gear may be shifted out of engagement with the driven gear on the crank t and into engagement with said intermediate gear mechanism. a

'1 in an :qaparatns for starting explosive the combination With a ,crank shaft mg a driven gear, a second shaft havgear mounted on said second shaft, a driving gear mounted on said crank shaft, intermediate gear mechanism, manually operable means *forthrowing the intermediate gear mechanism into engagement With the driving gear and the gear on the second shaft into engagement with the driven gear, automatic means for shifting the gear on the second shaft out of engagement with the driven gear and into engagement with the intermediate gear mechanism and holding the same in such position until the power spring has been rewound, and means for automatically shifting the gear on the second shaftto a neutral posit-ion when the spring has been reWound. I

In testimony whereof, I have signed my name to this specification in the presence of two subscribing Witnesses, this 24th day of September 1906.

LEVIS MILLER BOOTH. Witnesses B. A. ITTNER,

' D. P. Fosrnn. 

